Table of Contents

## Name

XvSelectPortNotify - enable or disable XvPortNotify(3X) events

## Syntax

#include <X11/extensions/Xvlib.h>

XvSelectPortNotify(dpy, port, onoff)

Display *dpy;
XvPortID port;
Bool onoff;

## Arguments

dpy
  Specifies the display screen on which the X Server is to accept requests from X clients. If the display option is not specified, X uses the display screen specified by your DISPLAY environment variable. The display option has the format hostname:number. Using two colons (::) instead of one (:) indicates that DECnet is to be used for transport.
port
  Specifies the port for which PortNotify events are to be generated when its attributes are changed using XvSetPortAttribute(3X) .
onoff
  Specifies whether notification is to be enabled or disabled.

## Description

## Returned Values

[Success]
  Returns True if XvSelectPortNotify(3X) completed successfully.
[XvBadExtension]
  Returned if the Xv extension is unavailable.
[XvBadAlloc]
  Returned if XvSelectPortNotify(3X) failed to allocate memory to process the request.

## Diagnostics

[XvBadPort]
  Generated if the requested port does not exist.

## See Also

Table of Contents

- Name
- Syntax
- Arguments
- Description
- Returned Values
- Diagnostics
- See Also